DRAFT

UK Interface Requirement 2007

FixedBroadband Services operating in the frequency range5725 -5850MHz

(Version 1.00)

98/34/EC Notification Number: N/A

Published xxxx September 2003

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1.Foreword

1.1The Radio Equipment and Telecommunications Terminal Equipment Directive 99/5/EC (R&TTE Directive) was implemented in the United Kingdom (UK) on the 8 April 2000 by The Radio Equipment and Telecommunications Terminal Equipment Regulations, Statutory Instrument 2000 No. 730. In accordance with Articles 4.1 and 7.2 of Directive 1999/5/EC, this UK Interface Requirement contains the requirements for the use of Fixed Broadband Radio Systems operating in the frequency range5725-5850 MHz.

1.2Nothing in this UK Radio Interface Requirement shall preclude the need for equipment to comply with Directive 1999/5/EC.

1.3It is required by the Wireless Telegraphy Act 1949 that no radio equipment is installed or used in the UK except under the authority of a licence granted by or otherwise exempted by regulations made by the Secretary of State. It is a condition of such a licence or exemption regulations as appropriate that the equipment must meet the minimum requirements specified in this UK Interface Requirement for the stated equipment types and for the stated frequency bands.

1.4The requirements given in the main body of this UK Radio Interface Requirement will apply in the use of Fixed Broadband Radio Systems operating in the frequency range5725-5850 MHz, in the UK. Fixed Broadband Radio Systems share this frequency range with military radars, satellite E-S links, ENG OB links and RTTT systems. Therefore mitigation techniques may need to be employed to avoid harmful interference to those services. Although there is currently no Harmonised European Norm for Fixed Broadband Radio Systems operating in this frequency range, standardisation activities continue within ETSI. If necessary the resultant standards will include appropriate mitigation techniques such as DFS and TPC. At the time of writing, the Europe wide regulatory framework remains under development but it is likely that any ERC Decision to formalise use of the band for Fixed Broadband Radio Systems will mandate implementation of the specific mitigation measures mentioned above1.5 This UK Radio Interface Requirement will be revised as necessary, for example to follow;

i)current technology developments for reasons related to the effective and appropriate use of the spectrum in particular maximising spectrum utilisation; and

ii)changes to the available spectrum allocated for short range, broadband, wireless communications.

iii)Publication of a Harmonised standard by ETSI.

1.6All UK Radio Interface Requirements notified under Directive 98/34/EC will be published and will be made available free of charge from the RA Information and Library Service and/or the RA web-site. The addresses for both the Library and the web-site are given on the back cover of this document

1.7Further information on this UK Radio Interface Requirement can be obtained from the technical enquiry contact given on the back of this document.

  1. Minimum Equipment Requirements for Operation within the UK
  2. The minimum requirements in this document are made for reasons related to the effective and appropriate use of the radio spectrum, in particular maximising spectrum utilisation.
  3. This UK Radio Interface Requirement gives a high level description of how the spectrum in the UK is used for Fixed Broadband Radio Systems operating in the frequency range5725-5850 MHz. It does not prescribe a technical interpretation of the ‘essential requirements’ of Directive 1999/5/EC.
  4. This UK Radio Interface Requirement therefore stipulates the minimum requirements necessary to allow Fixed Broadband Radio Systems operating in the frequency range5725-5850 MHz to be licensed in the UK. Tables 2.1 and 2.2 contain the relevant equipment parameters. These together with the ‘essential requirement’ detailed in Article 3.2 of the Directive 1999/5/EC constitute the minimum equipment requirements for the operation of Fixed Broadband Radio Systems operating in the frequency range5725-5850 MHz within the UK.
  5. The technical parameters specified in the UK Radio Interface Requirement are applied to achieve the desired level of compatibility for Fixed Broadband Radio Systems and with other radiocommunication services while promoting enterprise, innovation and competition.
  6. This UK Radio Interface Requirement provides the necessary technical information that facilitates access to spectrum allocated to Fixed Broadband Radio Systems in the UK. It is not the intention of this UK Radio Interface requirement to duplicate or impose any additional ‘essential requirements’ of the Directive 1999/5/EC on products. Any specified parameters within this document are for the purpose of identifying product options and not as a national product requirement.

Table 2.1: Minimum Equipment Requirements

Frequency range (MHz) / Service / Power / Duplex / Additional Technical Requirements / Additional Technical Requirements (informative)
5725-5850[1][2][3]
(Band C) / Fixed / Max E.I.R.P. 2W with a PSD not exceeding 100mW/MHz[4] / TDD / DFS. Equipment operating in this band must implement a random channel access mechanism capable of operating across all of the frequency range. Shall prevent co-channel operation in the presence of Radar signals. The DFS detection threshold shall be based upon
-67 dBm for devices with EIRP greater than 1W
-64 dBm for devices from 200mW to 1W EIRP
-62 dBm for devices with EIRP less than 200mW
These thresholds represent the levels at the output of the antenna and are normalised to 0dBi antenna gain. For devices with a higher gain the threshold may be increased by 1 dB for each dB of antenna gain.
TPC shall be employed with a dynamic range of at least 19dB relative to the maximum EIRP allowed. Stations with a maximum EIRP capability lower than the maximum allowed EIRP can reduce the TPC range accordingly. / See Annex A for channel plan details
See VNS 2107 for guidance to manufacturers and notified bodies on what the UK deems acceptable test methods for equipment declarations and/or testing.

Annex AChannel Plan (Informative)

Table A1; Example channel plan, nominal carrier frequency allocations

Carrier centre frequency fc (MHz)
5 MHz channelisation / 10 MHz channelisation / 20 MHz channelisation
5727.5, 5732.5, 5737.5, 5742.5, 5747.5, 5752.5, 5757.5, 5762.5, 5767.5, 5772.5, 5777.5, 5782.5, 5787.5, 5792.5, 5817.5, 5822.5, 5827.5, 5832.5, 5837.5, 5842.5, 5847.5, / 5730, 5740, 5750, 5760, 5770, 5780, 5820, 5830, 5840, / 5735, 5755, 5775, ,5835,


Figure A3; Spectral Power Mask for 5, 10 & 20 MHz channelisation schemes

Figure A3: Transmit spectral power mask. dBr is the spectral density relative to the maximum spectral power density of the transmitted signal. For 5, 10 and 20 MHz channelisation schemes this mask should be scaled accordingly

Document history

Draft / Date / Changes
Radiocommunications Agency
General Enquiries to the
Information and Library Service: / Technical Enquiries to the
Private Business Systems Unit
Tel.: +44-(0) 207-211-0502 or 0505 / Tel.: +44-(0)207-211-0713
Fax: +44 (0) 207-211- 0507 / Fax: +44-(0)207-211- 0163
Email: / Email:
Web site: www.radio.gov.uk

Postal address:
Private Business Systems Unit, Wyndham House, 189 Marsh Wall, LONDON, E14 9SX

This is a UK Radio Interface Requirement

[1]Licences shall be issued on a non-protection and non-interference (to other primary users) basis.

[2]Co-ordination & site clearance considerations may impose additional restrictions on the maximum radiated power allowed on specific frequencies, directions and locations.

[3]The frequency range 5795 MHz to 5815 MHz shall not be used and should be notched out to protect RTTT devices. This interim arrangement will be reviewed two years from the date of publication of this IR.

[4]The e.i.r.p. spectral density of the transmitter should not exceed the following values for the elevation angle  above the local horizontal plane (of the Earth):

34dB(W/4KHz)for0 <4

34  1.2( –4) dB(W/4KHz) for4 < 28

62.8 dB(W/4KHz) for > 28

or

For Azimuth Beamwidths less than 25:

34 dB(W/4kHz)for0 <90